Calculate Your Dog’s Age in Dog Years

Most people think that calculating the age of dogs and cats in “human years” is quite simple: multiply their age by seven. For example, a 4-year-old dog or cat would actually be 28 years old in human years.

But when you really begin weighing out the arithmetic, this method doesn’t add up. Say a 1-year-old dog is the equivalent of a 7-year-old human — get out of here! How many 7-year-old humans are sexually active and capable of reproducing? Dogs and cats are much more likely to have babies at 1 year old or even at 10 years old, than any person who is 7 or 70.

Aging is much faster during a dog’s first two years but varies among breeds. Large breeds, while they mature quicker, tend to live shorter lives. By the time they reach 5 they are considered “senior” dogs. Medium-sized breeds take around seven years to reach the senior stage, while small and toy breeds do not become seniors until around 10.

FIND OUT

YOUR DOG'S AGE:YOUR DOG'S BREED:

YOUR DOGS AGE

IN HUMAN YEARS IS

0 YEARS

Note: It is a common belief that 1 human year is equal to 7 dog years. That is not very accurate, since dogs reach adulthood within the first couple of years. The formula used above is from a canine expert and is a bit more accurate. (as accurate as one can judge these things)